Speed-indicator for centrifugal machines.



L. A. LAURSEN.

SPEED INDICATOR FOR GENTRIPUGAL MAGHINES.

APPLICATION FILED JULY 9, 1908.

925,641. Patented June 22, 1909.

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9% Eamon L. A. LAURSEN. SPEED INDICATOR FOR GENTRIFUGAL MACHINES.-APPLIOATIOH FILED JULY 9, 1908.

Patented June 22,1909.

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THE NORRIS PETERS co., wasamomn a c UNITED STATES PATENT FFTQ.

LAURITS AKSEL LAURSEN, OF CORNELL, WISCONSIN, ASSIGNOR OF ONE-HALF TOEDWARD FALBE, OF HOLCOMBE, WISCONSIN.

SPEED-INDICATOR FOR GENTRIFUGAL MACHINES.

To all whom it may concern:

Be it known that I, LAURITS AKsEL LAUR- SEN, a citizen of the UnitedStates, residing at Cornell, in the county of Chippewa and State ofWisconsin, have invented certain new and useful Improvements inSpeed-Indicators for Centrifugal Machines, of which the following is aspecification.

This invention comprises a novel form of speed indicator for centrifugalmachines particularly.

The invention is designed especially for use in connection withcentrifugal cream separators. As is well known in the operation of creamseparators of the above type the best results are obtained from themachine when the same is operated at a certain speed.

The present invention consists of an attachment so constructed as to bereadily applied to a separator and operated thereby to indicate when themachine is being driven at the proper speed to secure the best resultsin the separation of the cream from the milk.

For a full understanding of the invention reference is to be had to thefollowing detail description and to the accompanying drawings, in which-Figure 1 is a view showing the invention applied to an ordinary form ofcream separator; Fig. 2 is a view of the attachment alone; Fig. 3 is aside elevation of a modification of the invention, Fig. 4c shows afurther modification of the invention, in top plan view; Fig. 5 is aside elevation of the modification in Fig. i, and Fig. 6 is a detailview of the supporting frame.

Throughout the following detail description and on the several figuresof the drawings similar parts are referred to by like referencecharacters.

Specifically describing the invention and referring to Fig. 1 of thedrawings particularly, the cream separator illustrated is of aconventional type embodying a suitable operating handle 1 for drivingthe separator bowl at high speed, a fly wheel 2 being employed.

The invention is preferably mounted upon a supporting post 3 whichcarries the milk Specification of Letters Patent.

Application filed July 9, 1908.

Patented June 22, 1909.

Serial No. 442,725.

receptacle 4 from which the milk passes to the separator bowl in theoperation of the machine.

It is contemplated that the mechanism included in the present inventionshall be operable by some driven part of the mechanism of the creamseparator.

The invention consists of a frame 5 of somewhat rectangular form, saidframe being attached at one end, by means of plates 5 to the supportingpost 3. Mounted on the frame 5 is a vertical spindle 6 to which arepivoted centrifugal arms 7 at the lower ends of which are carriedweights 8. The weights 8 comprise knockers, the detail construction ofwhich is immaterial though it may be well to state that the samecomprise loose rings 8 and suitable spring devices for holding saidrings in normal positions. A collar 9 on the spindle 6 is connected bylinks 10 with the arms 7 said collar sliding freely on the spindle asthe arms 7 move outwardly and inwardly by centrifugal action when themechanism is in operation. The knockers 8 are adapted to cooperate witha bell 11, or any other suitable sounding device, said bell beingadjustably mounted on a stem 12 secured to the frame 5. The bell 11 hasa threaded connection with the stem 12 and is movable longitudinallythereof when being adjusted. It is desirable that the bell 11 beadjustable in order that the attachment comprising the invention may beproperly applied to different machines. On the lower portion of thespindle 6 is a bevel gear 13 meshing with a similar gear 14 on a shortshaft 15, the latter being arranged horizontally and mounted in suitablebearings in the frame 5. On the outer end of the shaft 15 is a gear 16and the teeth of said gear are adapted to mesh with the teeth of aflange or ring 17 carried by the fly wheel 2 of the cream separator. Thering 17 is preferably secured to the wheel 2 by any desirable fastening.devices, or it may be formed integrally.

In the actual operation of the invention it will be aparent that as theseparator bowl is being driven, the fly wheel 2 is rotated at acorresponding speed and motion is transmitted from said fly wheel bymeans of the toothed ring 17 and gearing carried by the frame 5 to thespindle 6. The spindle 6 is then rotated and the arms 7 thereof moveoutwardly by centrifugal action in a manner similar to the arms of anordinary centrifugal speed governor. Then the machine is driven at acertain speed the knockers 8 carried by the arms 7 will strike the bell11 and indicate the speed of the machine. The bell 11 will preferably beadjusted so that when the machine is driven at a speed to produce thebest results, the bell will be hit by the knockers 8 during revolutionof the spindle 6 and the operator will thus be made aware of the factthat the machine is being driven at the proper speed to effect theseparation of the contents of the separator bowl.

In the modification of the invention illustrated in Fig. 8 theconstruction is substantially the same as hereinbefore described ingeneral features. In Fig. 3, however, the gearing is dispensed with anda friction wheel 18 having a contact facing at its rim portion ismounted on the spindle 6*. The spindle 6 is supported by a frame 5similar to the frame 5 above described, and the sounding of indicatingdevices cooperate in substantially the manner before set forth. Thefriction wheel 18 is designed to be arranged upon the frame of theseparator in such a way that the same is in contact with the fly wheel,or any equivalent driven element, whereby motion is imparted to thespindle ("3 and the latter driven at a speed corresponding with that ofthe separator mechanism.

A further modification of the invention is shown in Fig. 4. In thisconstruction the indicating mechanism is carried by a frame 19, thespindle 6 being mounted in suitable hearings in said frame 19 and havingse cured thereto at its lower portion a friction wheel 20. In the outerportion of the frame 19 is mounted a second friction wheel 21 theperiphery of which is in contact with the wheel 20, being held in suchcontact by means of spring pressed bearings 22. The frame 19 carries thestem 12 which supports the bell 11 the latter being fixed in itsadjustment by means of a thumb nut, or like element, indicated at 23.The centrifugal arms 7 carried by the spindle 6 have the knockers 8which are adapted to cooperate with the bell 11 in the manner beforedescribed.

The modified construction of the invention shown in Fig. 4 is designedfor use in connection with separating machines of a dif ferent type fromthat illustrated in Fig. 9. With the above in view the frame 19 ispivoted at one end, as shown at 24 to a detachable supporting frame 25.The frame 25 is adapted to embrace the lower portion of the frame workof the cream separator and is composed of sections adjustably connectedas shown at 25, in order that the frame 25 may be applied to machines ofdifferent sizes. The friction wheel 21 is arranged upon the free end ofthe frame 19 and said frame is so mounted on the frame 25 that the wheel21 may be readily disposed so as to remain in frictional contact withthe driven part of the cream separator. In the construction illustratedthe friction wheel 21 is adapted for contact with the spindle of theseparator bowl, which is driven at high speed in the operation of thecream separator, and said wheel is held in such contact by means of aspring 26, attached to the frame 25 and the outer end of which engagesthe pivoted end portion of the frame 19 and holds said frame in properposition for operative contact of the wheel 21 with the bowl spindledesignated 27. The frame 19, however, may be swung to one side so as todisconnect the wheel 21 from the spindle 27. The indicating mechanismmay therefore be brought into and out of operation at will.

In the construction of the invention shown in Figs. 1, 2, and 3, theframes 5 and 5 described are so mounted upon the frame work of the creamseparator that they may, by pivotal movement, be thrown to one side inorder to disengage the drive gears 16 and 18 from the driven partsengaged thereby when the indicating mechanism is in operation. Theoperation of such indicating mechanism may thus be discontinued in amanner some what similar to that shown in Fig. 1.

It is contemplated within the scope of the invention to modify thedetail construction of the indicating devices, and supporting framework, in order that the invention may be readily applied to machines ofdifferent types, and in order to secure the best results in theoperation of the attaching device.

Having thus described the invention, what is claimed as new, is:

1. In combination with a centrifugal machine embodying a supporting postand driving mechanism including a rotary element, indicating mechanismfor measuring the speed of the machine comprising a frame, a wheelmounted on said frame, means connecting the frame with the postaforesaid so as to support said wheel either in or out of contact withthe rotary element of the machine, a spindle mounted in said frame,centrifugal arms connected with said spindle, means connecting thespindle and the wheel on the frame whereby the former may be actuated torotate the spindle, a bell, and means whereby the bell is adjustablysupported on the frame for cooperation with the arms of the spindle,substantially as described.

2. An indicating attachment substantially as set forth comprising aframe, means adknockers, and means for holding the bell at 10 justablysupporting said frame in operative various adjustments on the stem.

position, a driven part a spindle mounted on In testimony whereof IaffiX my signature the frame, gearing for connecting said spininpresence of two witnesses.

5 die with the driven part, centrifugal arms carried by the spindle,knockers supported LAURITS AKSEL LAURSEN' by said arms a stem mounted onthe frame Witnesses: in proximity to the spindle a bell carried byR0131. L. ZIMMERMAN, said stem and adapted for contact with the N. M.MARTIN.

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